Filtering element



A. BOIANO Feb. 7, 1939. 1

FILTERING ELEMENT Filed Jan.

Patented Feb. 7, 1939 I g FILTERING ELEMENT Andrew 'Boiano, Rochester, N. Y. 'Application'January 12, 1937, Serial No. 120,259

3 Claims. (01. 210-170) My present invention relates to filters and latter in use, it is inverted and inserted in the more'particularly to small filtering'units adapted basin so that its shoulders rest upon conforming to be used in conjunction with containers'and shoulders l2 on the latter. The thrust head 9 packages of liquids to prevent impurities from thereby engages the'bottom of "the basinand unissuing when the contents are emptied or drawn seats the valve, as shown in Fig. l, whereafter 5 off, and it has for its object to provide a simple, the contents of the container replenish the basin inexpensive and efficient unit of this kind. The in a familiar manner. The fiow is through the improvements relate in part to a provision for enlarged aperture l3 through which the valve the adaptation of the unit to the container and stem passes.

10 to the provision of renewable filtering media that In the practice of my invention, I provide a 10 can be discarded when fouled and readily refiltering unit that is insertable in and removable placed at small expense. To these and other from the neck of the container without in any ends, the invention resides in certain improveway interfering with the above arrangements or ments and combinations of parts, all as will be disturbing their functions, and in the description 5 hereinafter more fully described, the novel feathereof I will for convenience use top and tures being pointed out in the claims at the end bottom as those terms apply in the illustrations. of this specification. I provide a cylindrical hollow body element M In the drawing: having foraminous side walls, open at one end,

Fig. 1 is acentral vertical sectional view broken and closed at the other end by a foraminous away at top and bottom of a dispensing container top end wall l5. This is soldered or otherwise se- 20 fitted with a filtering unit constructed in accordcured 'at its top end within a rigidly relatively ance with and illustrating one embodiment of my thick encircling band I6. It is similarly proinvention; vided at its lower end with a like band l'l so that With respect to its position in Fig. 1, Fig. 2 is the general effect is that of a tube with an intera bottom end view of the unit; mediate portion of its side walls perforated and Fig. 3 is a corresponding top end view of the itskupper end interiorly closed by a perforated unit; dis

Fig. 4 is a side elevation of the unit, and This intermediate portion is covered in close Fig. 5 is a plan view of a filtering disk applied contact with a layer of fibrous filtering material, at the end of the unit. such as a finely woven textile in the form of a 30 Similar reference numerals throughout the band l8, which may be wrapped thereabouts but several views indicate the same parts. may better be a ring that can be expanded and Although it will be obvious from the ensuing slipped into place over one end of the unit. At description and explanation that my unit and any rate, it is thinner than the bands I6- and I1 features thereof are applicable to filtering in so that it lies in a depression between them and various environments, I have in the illustration is protected thereby from lateral contacts when thereof elected to show it in connection with a the unit is slipped into another tubular unit. kerosene reservoir for oil burning heaters. Re- Obviously, this band can be removed in the same ferring more particularly to the drawing, I inway when fouled and replaced with a fresh one. dicates a basin mounted on a standard 2 placed The end wall 15 is similarly covered with a m conveniently to the burner, which is fed theredisk 19 also of fibrous material and also renewfrom through a pipe 3 that drains the basin. able, the same being shown in detail in Fig. 5. A can or drum 4 conta ning the oil, in which It may be held in place by being clamped between pa k t m y e pur has d by the user, has a the wall and another outer foraminous disk 20 5 threaded neck 5 provided with a screw cap closure by means of a central bolt 2 I. 6. Projecting thro the Center Of e cap is a The lower band I! is provided at its lower end stem 1 provided with a valve head 8 On its i ner with a lateral flange 22. The unit is inserted in end and a thrust head 9 on its Outer end between the neck 5 of the container, as shown in Fig. 1, which and the cap is interposed a spring Ill. The preferably in spaced relation to its side walls under side of the Valve head 8, which is the 'seatand through the medium of a gasket 23, the 50 ing side, is suitably surfaced to coact with a flange 22 thereof rests against the mouth of the washer H on the inside of the cap. It will be neck. Thereupon, the cap II is applied, pressing obvious that the spring Ill will normally hold the the flange to its seat and holding the unit firmly valve closed and hence maintain the container in place within the body of oil. sealed. When, however, it is desired to put the In operation, all the oil that reaches the outlet 55 l3 to the interior of the basin must pass through either the lateral filter or the end filter and in passing through both until the level gets very low sufiicient flow of filtered oil is maintained. Under the circumstances chosen in this embodiment, for instance, an expensive filtering medium would not be practicable and yet oil as supplied for burners almost inevitably contains solid impurities such as scale from the interior of the package and the burner jets are so fine that these, if permitted to reach them, cause a great deal of trouble. With my simple device, such trouble is eliminated while the cost of the filter renewable parts is negligible 2. A tubular filtering element embodying, in combination, an outwardly flanged outer end adapted to seat against the mouth of a container,

' a foraminous bottom end Wall, an intermediate portion only of the lateral wall being also foraminous, a renewable band of fibrous material exteriorly covering the last mentioned foraminous portion and a renewable disk of fibrous material exteriorly covering the foraminous bottom.

3. The combination with a dispensing container having a neck and a mouth, of a detachable tubular filtering element extending into the neck in spaced relationship thereto embodying an outwardly flanged outer end resting against the mouth, a foraminous bottom end wall, an intermediate portion only of the lateral Wall being also foraminous, a renewable band of fibrous textile material exteriorly covering the last mentioned foraminous portion, a renewable disk of fibrous material exteriorly covering the foraminous bottom, and a detachable cap on the neck sealing the flange of the filtering element against the mouth.

ANDREW BOIANQ 

